11 12 527 Remachining a valve seat-cylinder head disassembled (N62)

WARNING: This page is about a different variant/trim than selected.

Special Tools Required:

00 3 520
00 3 580

Machine valve seat surface with special tool 00 3 520 or with 00 3 580 in accordance with tool manufacturer's instructions.

Fig 1: Machining Valve Seat Surface With Special Tool 00 3 520

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: After machining valve-seat surface: Remachine outside and inside diameters with correction milling tool to the specified diameters until you obtain valve seat width (5).

Valve-seat angle
Correction angle, external diameter
Correction angle, internal diameter
Valve seat, external diameter
Valve seat width

Fig 2: Identifying Valve Seat Diameters Dimension

Courtesy of BMW OF NORTH AMERICA, INC.